How are headphones with single drivers able to make sounds that are “multiple sounds at the same time?´´

Question

So from what I know, the drivers vibrate at a given wavelength and that makes a sound. That makes sense to me of how you can create voice for example. But how does multiple instruments + voice in one driver work? You hear all them seperately but at the same time?

To me this sounds like a monitor pixel making more than 1 pixel at once.

In: 135

Answer 1

All sounds can be broken down into a sum of sine waves. You can then add those sine waves together again in your operating system, and play them through your speakers.